Granted Patent
Utility
US 6,807,985 · App. 10/163,327
High rangeability control valve
Inventors:
James Stares, Christopher Bittner
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Jun 5, 2002
Inventors
James Stares
Christopher Bittner
Assignee (at issue)
Dresser, LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.